摘要
激光清洗作为一种新型的绿色环保清洁方式,逐渐应用于轮胎模具表面污垢清洗方面。通过有限元仿真与实验对激光清洗轮胎模具橡胶涂层进行研究。利用高斯型脉冲激光作为虚拟热源对铝合金基底表面的橡胶涂层进行清洗数值模拟仿真,模拟结果表明,重复频率18 kHz时,不同功率橡胶涂层表面温度瞬间急剧升高至上万度,远超烧蚀蒸发温度,达到清洗效果,和矩形脉冲激光烧蚀仿真作对比,矩形激光清洗涂层深度大,效率高。使用重复频率可调的矩形脉冲Nd:YAG激光对铝合金基底表面橡胶涂层进行清洗试验。模拟与试验结果表明,重复频率15 kHz,功率280 W,能量密度为6.603 W/cm^(-2)时,清洗效果很好,完全清除基体表面橡胶涂层而不损伤基底,并且基底不发生氧化反应。
As a new green cleaning method, laser cleaning is gradually applied to the cleaning of dirt on the surface of tire mold. In this paper, the rubber coating of tire mold cleaned by laser is studied by finite element simulation and experiment. A Gaussian pulse laser is used as a virtual heat source to clean the rubber coating on the surface of aluminum alloy substrate. The simulation results show that when the repetition rate is 18 kHz, the surface temperature of rubber coating with different power suddenly rises to tens of thousands of degrees, far exceeding the ablation evaporation temperature to achieve the cleaning effect. Compared with the rectangular pulse laser ablation simulation, the rectangular laser cleaning coating has large depth and high efficiency. A rectangular pulsed Nd: YAG laser with adjustable repetition rate is used to clean the rubber coating on the surface of aluminum alloy substrate. Simulation and experimental results show that when the repetition frequency is 15 kHz, the power is 280 W, and the energy density is 6.603 W/cm^(2), the cleaning effect is very good, and the rubber coating on the substrate is completely removed without damaging the substrate, and no oxidation reaction occurs on the substrate.
作者
刘鹏宇
王宪伦
张则荣
LIU Pengyu;WANG Xianlun;ZHANG Zerong(College of Electromechanical Engineering,Qingdao University of Science and Technolog,Qingdao Shandong 266100,China)
出处
《激光杂志》
CAS
北大核心
2022年第6期164-169,共6页
Laser Journal
基金
国家自然科学基金(No.51105213)。
关键词
激光技术
激光清洗
有限元模拟
表面形貌
laser technology
laser cleaning
finite element simulation
surface topography
